Earth nutation influence on system dynamics of Northeast arctic cod

The present paper reports a correlation between time series of Northeast Arctic cod and the Earth nutation of 18.6 years. In the Barents Sea harmonic temperature cycles of 3*18.6=55.8 years, 18.6 years and 18.6/3=6.2 years are correlated to the growth rate of cod and will cause a long time biomass fluctuations. Harmonic temperature cycles of 18.6/3=6.2 years cycle are exponentially correlated to time series of new recruitment of cod. The influence from the Earth nutation is explained by a general systems theory where temperature cycles are a forced oscillator on the biological system in the Barents Sea. The system dynamics of the cod biomass are synchronized to the temperature cycle and amplified by a biological stochastic resonance to the food systems.